Medical research

Human cells can also change jobs

Biology textbooks teach us that adult cell types remain fixed in the identity they have acquired upon differentiation. By inducing non-insulin-producing human pancreatic cells to modify their function to produce insulin in ...

Cardiology

Intense IV blood sugar control doesn't improve stroke outcomes

Intravenous (IV) insulin did not improve stroke outcomes compared to standard blood sugar (glucose) control using insulin shots—answering a worldwide debate about the best way to control glucose in stroke patients. These ...

Diabetes

Reading, math scores no different for children with T1DM

(HealthDay)—Standardized reading and mathematics scores do not differ significantly for public schoolchildren with and without type 1 diabetes, according to a study published in the Feb. 5 issue of the Journal of the American ...

Medical research

Functional insulin-producing cells grown in lab

UC San Francisco researchers have for the first time transformed human stem cells into mature insulin-producing cells, a major breakthrough in the effort to develop a cure for type 1 (T1) diabetes.

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Insulin

More reference expression data

Insulin is a hormone that has extensive effects on metabolism and other body functions, such as vascular compliance. Insulin causes cells in the liver, muscle, and fat tissue to take up glucose from the blood, storing it as glycogen in the liver and muscle, and stopping use of fat as an energy source. When insulin is absent (or low), glucose is not taken up by body cells, and the body begins to use fat as an energy source, for example, by transfer of lipids from adipose tissue to the liver for mobilization as an energy source. As its level is a central metabolic control mechanism, its status is also used as a control signal to other body systems (such as amino acid uptake by body cells). It has several other anabolic effects throughout the body. When control of insulin levels fails, diabetes mellitus results.

Insulin is used medically to treat some forms of diabetes mellitus. Patients with Type 1 diabetes mellitus depend on external insulin (most commonly injected subcutaneously) for their survival because the hormone is no longer produced internally. Patients with Type 2 diabetes mellitus are insulin resistant, and because of such resistance, may suffer from a relative insulin deficiency. Some patients with Type 2 diabetes may eventually require insulin when other medications fail to control blood glucose levels adequately.

Insulin is a peptide hormone composed of 51 amino acids and has a molecular weight of 5808 Da. It is produced in the islets of Langerhans in the pancreas. The name comes from the Latin insula for "island".

Insulin's structure varies slightly between species of animal. Insulin from animal sources differs somewhat in 'strength' (in carbohydrate metabolism control effects) in humans because of those variations. Porcine (pig) insulin is especially close to the human version.

This text uses material from Wikipedia, licensed under CC BY-SA